Cloth roll drive



Dec. 24, 1940. H. H. BURDETT CLOTH ROLL DRIVE Filed May 13, 1940 Abe/10E H. fil/EDETT.

ATTORNEY.

Patented Dec. 24, 1940,

UNITED STATES PATENT OFFICE Draper Corporation, poration of Maine Application May 13,

6 Claims.

The present invention pertains to loom take-ups, and more particularly to the cloth roll drive thereof.

In loom take-ups of the type to which my invention applies, the cloth is wound onto a cloth roll which is driven from a, rotating driving member by friction shoes engaging the driving member. The cloth roll has a gudgeon on which the driving member is loosely mounted. The friction shoes have positive driving connection with the gudgeon and spring means urge the shoes into engagement with the driving member. Manual rotation of the cloth roll, for removing the cloth therefrom or for other purposes, cannot be conveniently accomplished unless the cloth roll is released or freed from the driving member.

Loom take-ups of the type above mentioned, as heretofore constructed commercially, were so arranged that the cloth roll could be freed from the driving member only by unscrewing adjusting nuts which were provided for adjusting the tension of the aforesaid spring means. The unscrewing of such adjusting nuts is a time consuming operation, and is further objectionable in that it destroys the adjustment and thus provides an opportunity for improper readjustment of the tension on the friction shoes. Several attempts-have been made to overcome this objectionable feature of the commercial form of cloth roll drive, but the constructions proposed heretofore have not been satisfactory for Various reasons, which need not be discussed.

A principal object of the present invention is to provide, in a cloth roll drive for loom take-ups, a cloth roll having a rotating driving member on the gudgeon, friction shoes connected to the gudgeon, spring means for urging the shoes into engagement with the driving member as aforesaid, novel manually operable cam means carried by the .gudgeon and operable to adjust the pressure of the spring means, and locking means for holding the cam means in adjusted position.

A further object of the invention is the provision of adjustable stop means whereby after a release of the driving member by the friction shoes, the shoes may again be moved into contact with the driving member under the same tension as before such release.

The foregoing and other objects of the invention are accomplished in the construction illustrated on the accompanying drawing, of which:

Fig. l is a perspective view of part of a loom having the preferred embodiment of my invention applied thereto;

Hopcdale, Mass., a cor- 1940, Serial No. 334,803

Fig. 4 is a cross section view taken on line 4-4 of Fig. 3.

The drawing shows parts of a'loom frame, including the front part of a right hand loom side I, a breast beam 2, a girt 3 and a vertical stand 4 which is supported by the breast beam and girt. A take-up roll or feed roll 5 is journalled in suitable bearings supported by stands such as the stand 4. The take-up roll 5 is positively revolved at a uniform speed, to feed the cloth forwardly in the loom, by any suitable usual means not shown. The cloth C which is thus fed by the take-up roll is wound onto a roll 6 commonly called a cloth roll. The cloth roll must revolve at a comparatively faster rate when substantially empty than when nearly full, the rate progressively decreasing as the diameter of the cloth supply increases.

The cloth roll 6 has a fixed shaft or gudgeon 1 projecting from the end thereof, which shaft or gudgeon may be journalled in a bearing 8 supported by the stand 4. The varying speed of the cloth roll requires that the roll be driven by a friction or slipping drive and such drive is commonly effected from a rotating driving member loosely mounted on the cloth roll shaft or gudgeon. In the embodiment shown, the outer or driving member 9 includes a friction drum [0 and a sprocket ll formed integrally with the drum. A chain I2 passes around sprocket H and around a sprocket l3 which revolves with the take-up roll 5, whereby the member 9 is revolved by the takeup roll. The drum It! includes a disc I3 having an annular flange [4, against the inner surface of which the friction means carried by the inner or driving member I5 engages.

In the embodiment shown the inner or driven member 15 is located within said outer or driving member 9 and is fixedly attached to the gudgeon l. The driven member l5 includes a disc I6 having a curved slot ll therein, for a purpose later to be disclosed, and an integral sleeve l8, the sleeve 1 8 being fixedly secured to gudgeon l by set screws l9. Two inwardly projecting, oppositely disposed studs 20 and 2| are carried by the disc l6. Pivoted on stud 20 is a friction shoe 22, also pivoted on stud 20 is a cam follower 23. Pivoted on stud 2| is a friction shoe 24, also pivoted on stud 2| is a cam follower 25. Friction shoes-22 and 24 are curved to fit the inner periphery of flange l4 and have a friction material such as leather 3!] secured to their outer surface.

The friction shoes 7 22 and 24 are adapted to be pressed outwardly into contact with the inner surface of the flange l4 on drum III.

In the embodiment shown, manually adjusted resilient means are provided for pressing the friction shoes outwardly into contact with the drum. Such means include a member 28 loosely mounted on gudgeon 1 and within drum H3. The member 26 has oppositely disposed cam surfaces 21 and 28. The pivoted cam follower 23 rides on cam surface 28 and pivoted cam follower 25 rides on cam surface 21. cam follower 25 is a coiled compression spring 29 held in place by projection 3| on shoe 22 and projection 32 on cam follower 25. Interposed between friction shoe 24 and cam follower 23 is a coiled compression spring 33 held in place by projection 34 on shoe 24 and projection 35 on cam follower 23. The cam surfaces 21 and 28 are so constructed and arranged that upon rotation of member 26 in one direction the cam followers 23 and 25 increasingly press against springs 29 and 33, and upon rotation in the opposite direction pressure on the springs is reduced.

Cam surface 21 and cam follower 25 have cooperating serrations 36 and 31 respectively to provide a step by step adjustment of the pressure exerted on the springs and also hold or look the member 26 in the selected adjusted position.

The member 26 has a manually operable lever 38 fixedly secured thereto, the lever 38 is offset from member 26 so that the lever 38 may extend through the curved slot I! in disc I6, and thereby provide an external handle 39. A pair of stops 40 and 4| are provided adjacent the periphery of disc I6 to limit the movement of handle 39. Stop 40 comprises a fixed projection integral with disc |6. Stop 4| is adjustable and comprises a member 42 curved to conform with the outer periphery of disc l6 and provided with a slot 43. A plurality of spaced holes 44 are provided adjacent the peripheral edge of disc l6. Member 42 may be adjustably secured to disc l6 by means of a bolt 45 passing through slot 43 in member 42 and engaging in either of holes 44. This gives a broad adjustment of stop 4|. The slot and bolt connection of member 42 to disc l6 provides for a minute adjustment of stop 4|. The operation of the device is as follows:

With the handle 39 resting upon fixed stop 40 substantially no pressure is exerted on springs 29 and 33 and accordingly the outward pressure on friction shoes 22 and 24 is very slight and driving member 9 and driven member |5 are free to move relative to each other. In this position when the loom is stopped and member 9 is stationary, the cloth roll may be freely rotated manually by any means such as hand wheel 46 which is fixedly secured to gudgeon 1. Upon the movement of handle 39 toward stop 4|, member 26 is rotated, cam followers 23 and 25 ride up the cam surfaces 28 and 21 and springs 29 and 30 are brought under increasing tension thereby causing friction shoes 22 and 24 to be pressed outward into contact with the inner surface of flange I4 and driven member I5 is frictionally engaged with driving member 9 whereby upon rotation of driving member 9, driven member |5 will be rotated and through member IS the cloth roll 6. It should be noted that the cooperating serrations on the cam surface 21 and cam follower 25 provide a step by step adjustment of the outward pressure to be exerted upon the friction shoes 22 and 24 and also serves as means for locking the device to such adjusted pressure.

Interposed between friction shoe 22 and The adjustable stop 4| may be set to a predetermined adjusted position whereby upon handle 39 being brought up against stop 4| the member 26 is rotated to an extent to exert through the cam follower and springs a predetermined pressure on the friction shoes, thereafter upon each movement of handle 39 into abutment with stop 4| the same predetermined adjusted pressure will be exerted upon the friction shoes.

While the outer member 9 has been described as the driving member and the inner member |5 has been described as the driven member, it

should be noted that it is immaterial which member is the driving or driven member. By roviding member I5 with a sprocket and loosely mounting it on gudgeon 1 and fixedly mounting member 9 on gudgeon 1, member |5 becomes the driving member and member 9 the driven member.

Having fully disclosed the preferred embodiment of my invention, I claim:

1. In a take-up mechanism of a loom, the combination with the cloth roll shaft of a friction clutch attached thereto, said clutch comprising an outer member and an inner member mounted on said shaft, one of said members being fixedly connected to said shaft to rotate therewith, the other of said members being freely rotatable on said shaft, friction means pivotally connected to said inner member and adapted to be moved outwardly into contact with said outer member, resilient means for pressing said friction means outwardly, means for adjusting the pressure of said resilient means, and means for driving said freely rotatable member from a moving part of the loom.

2. In a take-up mechanism of a 100m, the combination with the cloth roll shaft, of a friction clutch attached thereto, said clutch comprising an outer member and an inner member mounted on said shaft, one of said members being fixedly connected to said shaft to rotate therewith, the other of said members being freely rotatable on said shaft, friction means pivotally connected to said inner member and adapted to be pressed outwardly into contact with said outer member, resilient means for pressing said friction means outwardly, cam means for adjusting the pressure of said resilient means, and means for driving said freely rotatable member from a moving part of the loom.

3. In a manually releasable cloth roll drive for loom take-ups, the combination of a cloth roll shaft, an outer member, and an inner member one of said members being loosely mounted on said shaft, the other of said members being fixedly mounted on said shaft, said outer member comprising a revolving friction drum, said inner member comprising a disc rotatable within said drum, a pair of friction shoes pivoted to said disc and curved to fit the inner periphery of said drum, resilient means adapted to press said shoes outwardly into contact with said drum, cam means for adjusting the pressure of said resilient means, means for locking said cam means in adjusted position, and means for driving said loosely mounted member from a moving part of the loom.

4. In a take-up mechanism of a loom, thecombination with the cloth roll shaft, of a friction clutch attached thereto, said clutch comprising an outer member and an inner member, one of said members being freely rotatable on said shaft, the other of said members being fixedly connected to said shaft to rotate therewith, friction shoes pivotally connected to said inner member and adapted to be pressed outwardly into contact with said outer member, resilient means for pressing said shoes outwardly, cam means for adjusting the pressure of said resilient means, locking means for locking said cam means in said adjusted position, and means for driving said freely rotatable member from a moving part of the loom.

5. In a manually releasable cloth roll drive for loom take-ups, the combination with the cloth roll shaft of an outer member and an inner member, one of said members being loosely mounted on said shaft, the other of said members being fixedly mounted on said shaft to rotate therewith, said outer member comprising a friction drum, said inner member comprising a disc within said drum, a friction shoe pivotally connected to said disc and adapted to be pressed outwardly into contact with the inner periphery of said drum, a member loosely mounted on said shaft within said drum, said member having a cam surface, a cam follower pivotally connected to said disc and riding on said cam surface, resilient means located between said cam follower and said shoe, said cam surface being so constructed and arranged that upon rotation of said member in one direction the cam follower increasingly presses against said resilient means and upon rotation in the opposite direction pressure on said resilient means is reduced, manual means for rotating said member and means for holdingsaid member in an adjusted position, said holding means comprising cooperating serrations on said cam surface and said cam follower, and means for driving said first named loosely mounted member from a moving part of the loom.

6. In a manually releasable cloth roll drive for loom take-ups, the combination with the cloth roll shaft of an outer member and an inner member, one of said members being loosely mounted on said shaft, the other of said members being fixedly connected to said shaft to rotate therewith, said outer member comprising a friction drum, said inner member comprising a disc within said drum, a pair of friction shoes having their outer surface curved to fit the inner periphery of said drum pivotally connected to said disc and adapted to be pressed outwardly into contact with said inner periphery of said drum, a member within said drum loosely mounted on said shaft, said member having two cam surfaces, a pair of cam followers pivotally connected to said disc, the free end of one cam follower riding on one cam surface and the free end of the other cam follower riding on the other cam surface, a compression coil spring located between one cam follower and one shoe and a compression coil spring located between the other cam follower and the other shoe, said cam surfaces being so constructed and arranged that upon rotation of said member in one. direction each cam follower is pressed against the spring in contact therewith with increasing pressure and upon rotation in the opposite direction such pressure is reduced, manual means for rotating said member and means for holding said member in an adjusted position, said holding means comprising serrations on one cam surface cooperating with serrations on one cam follower, and means for driving said first named loosely mounted member from a moving part of the loom.

HORACE H. BURDETT. 

